2 files changed, 4 insertions, 5 deletions
diff --git a/utils/makemhr/loaddef.cpp b/utils/makemhr/loaddef.cpp
index e8092363..84fbb48b 100644
--- a/utils/makemhr/loaddef.cpp
+++ b/utils/makemhr/loaddef.cpp
@@ -33,11 +33,10 @@
 #include <iterator>
 #include <limits>
 #include <memory>
-#include <cstdarg>
+#include <optional>
 #include <vector>
 
 #include "alfstream.h"
-#include "aloptional.h"
 #include "alspan.h"
 #include "alstring.h"
 #include "makemhr.h"
@@ -1755,7 +1754,7 @@ static int ProcessSources(TokenReaderT *tr, HrirDataT *hData, const uint outRate
     PPhaseResampler onsetResampler;
     onsetResampler.init(hData->mIrRate, OnsetRateMultiple*hData->mIrRate);
 
-    al::optional<PPhaseResampler> resampler;
+    std::optional<PPhaseResampler> resampler;
     if(outRate && outRate != hData->mIrRate)
         resampler.emplace().init(hData->mIrRate, outRate);
     const double rateScale{outRate ? static_cast<double>(outRate) / hData->mIrRate : 1.0};
diff --git a/utils/makemhr/loadsofa.cpp b/utils/makemhr/loadsofa.cpp
index dcb0a35e..9e661839 100644
--- a/utils/makemhr/loadsofa.cpp
+++ b/utils/makemhr/loadsofa.cpp
@@ -33,11 +33,11 @@
 #include <iterator>
 #include <memory>
 #include <numeric>
+#include <optional>
 #include <string>
 #include <thread>
 #include <vector>
 
-#include "aloptional.h"
 #include "alspan.h"
 #include "makemhr.h"
 #include "polyphase_resampler.h"
@@ -265,7 +265,7 @@ static bool LoadResponses(MYSOFA_HRTF *sofaHrtf, HrirDataT *hData, const DelayTy
         double *hrirs = hData->mHrirsBase.data();
 
         std::unique_ptr<double[]> restmp;
-        al::optional<PPhaseResampler> resampler;
+        std::optional<PPhaseResampler> resampler;
         if(outRate && outRate != hData->mIrRate)
         {
             resampler.emplace().init(hData->mIrRate, outRate);